<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <!-- 这里写框架 -->
    <div id="app">

        <select name="" id="" v-model="selectValue">
            <option value="101">北京</option>
            <option value="102">南京</option>
            <option value="103">西京</option>
            <option value="104">东京</option>
            <option value="105">中京</option>

        </select>


    </div>


    <!-- 引入包 -->

    <!-- <script src="https://cdn.jsdelivr.net/npm/vue@2.7.16/dist/vue.js"></script> -->
    <script src="./vue.js"></script>
    <!-- 创建实例 -->

    <script>
        const app = new Vue({
            el: '#app',
            data: {
                selectValue: '',

            },
        })


    </script>

</body>

</html>